1-(4-chlorophenyl)-1,4-dihydropyridine 、
丁炔二酸二甲酯 以
氯仿 为溶剂,
生成 (3aS,3bS,6aR,6bR)-1-(4-Chloro-phenyl)-1,3b,4,6b-tetrahydro-cyclopenta[3,4]cyclobuta[1,2-b]pyrrole-3,3a,6,6a-tetracarboxylic acid tetramethyl ester 、 (3aR,3bS,6aR,6bS)-1-(4-Chloro-phenyl)-1,3b,4,6b-tetrahydro-cyclopenta[3,4]cyclobuta[1,2-b]pyrrole-3,3a,6,6a-tetracarboxylic acid tetramethyl ester